Die for button-machines



(No Model.)

L. PRANGE. DIE FOB BUTTON MACHINES.

Patented Apr. 21, 1891.

m/ VE/VTOR )3,

ATTORNEYS M f n UNITED STATES PATENT OFFICE.

LEO PRANGE, OF BROOKLYN, NEXV YORK.

DIE FOR BUTTON-MACHINES.

SPECIFICATION forming part of Letters Patent No. 450,893, dated April21, 1891.

Application filed September 27, 1890. Serial No. 366,353. (No model.)

To all whom it may concern.-

Be it known that I, LEO PRANGE, of the city of Brooklyn,in the county ofKings and State of New York, have invented a new and Improved Die forButton-Machines, of which the following is a full, clear, and exactdescripion.

The invention relates to button-machines for pressing glass or jetbuttons, such as shown and described in the Letters Patent No. 402,280,granted to A. Scholz, under date of April 30, 1890.

The object of the invention is to provide a new and improved die whichis simple and durable in construction and serves to form astipple-surface on the buttons.

The invention consists of a die formed by breaking a piece of hard metalinto two parts, the broken surface of each part forming the face of thedie.

The invention also consists of certain parts and details andcombinations of parts, as will be hereinafter fully described, and thenpointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is ase ctional side elevation of part of a button-machineprovided with the improvement. Fig. 2 is a perspective view of theimprovement, and Fig. 3 is a face view of a modified form of theimprovement.

The button-machine A, to which the improvement is applied, is preferablyof the construction shown in the patent above referred to andillustrated partly in Fig. 1. The button-machine A is provided with themovable die B, having jaws O, supporting the stapleD, adapted to bepressed into the button. The movable die B is adapted to slide towardthe fixed die E, having a face F, against which the glass, jet, or othermaterial is pressed, so as to take the configuration of the said face.The die E is formed by breaking a piece of hard metal, preferably steel,into two parts, the broken surface of each part forming the face F ofthe die.

In breaking a piece of metal, such as steel, the grain forms a stipple,and when the jet or glass is pressed against this surface astipplesurface is formed on the face of the button. Usually alargerpiece of metal than required for the size of the die is broken in twoparts, and the best and most suitable partof the surface of the brokenpart is selected and turned or otherwise formed into the die. Ifdesired, the stipplesurface of the die may be further engraved withornaments G, as illustrated in Fig. 3, the said engraved parts formingraised ornaments on the face of the button, the background, however,being a stipple. Thus it will be seen that in a very simple manner a diecan be formed which, if engraved by hand to form a stipple, would bevery expensive.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. A metal die for forming buttons, having itsimpression or working face composed of a fractured surface, whereby astipple-surface is given to the die by the grain of the metal,substantially as described.

2. A die for button-machines of the character described, having itsimpression or working face composed of a fractured surface, the grain ofthe metal of said fractured surface forming a stipple and provided withornaments sunken into said stipple-surface, substantially as described.

LEO PRANGE.

Witnesses:

THno. G. I-losrnn, C. SEDGWICK.

